Hey there again, @Ulfsaar221!
I do get notified about the threads I follow, regardless of the quote, but don't worry!
I'd definitely not advise you to interrupt the testing procedure. The EXTENDED test usually takes longer because it checks thoroughly the health state of the drive. I just hope you backed up all the data prior to starting the tests as they could put additional stress, if the HDD is failing.
Once the process is completed, update the thread with the SMART data results
(You should click on view SMART data in the utility above the list of drives).
Another way to troubleshoot the WD Black would be to
use the DOS verion of the software, but you will need to create a bootable flash drive with the utility first. It would allow you to run both tests without Windows OS interfering. However, it would still take time to run the Extended test.
Keep me posted with the results.
SuperSoph_WD